PLEASE HELP :) Can someone please explain what primary production is? Also what does sink/source/flux/ and egestion mean? (Can an organism be a sink/source and flux at the same time or is an organism only supposed to be one or the other?

What are the 3 types of artificial cloning

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.